316 Caledonian Road, London, N1 1BB

Planning appeal 3374512 at 316 Caledonian Road, London, N1 1BB (London Borough of Islington) was dismissed on 9 February 2026 by Inspector Clark L, by written representations. The main issue, as the Inspector framed it: The effect of the proposed development on the character and appearance of the host property, and whether the proposed development would preserve or enhance the character or appearance of the Barnsbury Conservation Area.

erection of a mansard roof extension

Authority: London Borough of Islington
Appeal type: minor · Planning Appeal
Procedure: Written Representations
Development: residential · Other minor developments
Inspector: Clark L
Postcode: N1 1BB

Main issues, as the Inspector framed them

The effect of the proposed development on the character and appearance of the host property, and whether the proposed development would preserve or enhance the character or appearance of the Barnsbury Conservation Area

What decided it

The proposed mansard would disrupt the rhythm of the existing predominantly unaltered roofscape and harm the character and appearance of the conservation area, with insufficient public benefits to outweigh this less than substantial harm to the designated heritage asset.

What the Inspector cited

Development plan policies: London Plan 2021 Policy D3London Plan 2021 Policy D4London Plan 2021 Policy HC1Islington Local Plan Strategic and Development Management Policies 2023 Policy PLAN1Islington Local Plan Strategic and Development Management Policies 2023 Policy DH1Islington Local Plan Strategic and Development Management Policies 2023 Policy DH2
National Planning Policy Framework: Paragraph 213Paragraph 215

How the Inspector dealt with each one is set out in the app, in order: the development plan, national policy, housing land supply, other considerations and the planning balance, beside the letter.

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The decision letter

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More decisions in London Borough of Islington

The authority’s record since 2016 · every decision in 2026

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The main issues, what decided it, the planning balance and the policies and judgments listed as cited are read from the published letter by Town Planner Pro and are our summary, not the Inspector’s words; the letter itself is the record. Contains public sector information licensed under the Open Government Licence v3.0. Research, not advice.